1 //===- FormatUtil.h ------------------------------------------- *- C++ --*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef LLVM_TOOLS_LLDBTEST_FORMATUTIL_H
11 #define LLVM_TOOLS_LLDBTEST_FORMATUTIL_H
12 
13 #include "llvm/ADT/ArrayRef.h"
14 #include "llvm/ADT/StringRef.h"
15 #include "llvm/ADT/Twine.h"
16 #include "llvm/Support/FormatVariadic.h"
17 #include "llvm/Support/raw_ostream.h"
18 
19 #include <list>
20 
21 namespace lldb_private {
22 
23 class LinePrinter {
24   llvm::raw_ostream &OS;
25   int IndentSpaces;
26   int CurrentIndent;
27 
28 public:
29   class Line {
30     LinePrinter *P;
31 
32   public:
33     Line(LinePrinter &P) : P(&P) { P.OS.indent(P.CurrentIndent); }
34     ~Line();
35 
36     Line(Line &&RHS) : P(RHS.P) { RHS.P = nullptr; }
37     void operator=(Line &&) = delete;
38 
39     operator llvm::raw_ostream &() { return P->OS; }
40   };
41 
42   LinePrinter(int Indent, llvm::raw_ostream &Stream);
43 
44   void Indent(uint32_t Amount = 0);
45   void Unindent(uint32_t Amount = 0);
46   void NewLine();
47 
48   void printLine(const llvm::Twine &T) { line() << T; }
49   template <typename... Ts> void formatLine(const char *Fmt, Ts &&... Items) {
50     printLine(llvm::formatv(Fmt, std::forward<Ts>(Items)...));
51   }
52 
53   void formatBinary(llvm::StringRef Label, llvm::ArrayRef<uint8_t> Data,
54                     uint32_t StartOffset);
55   void formatBinary(llvm::StringRef Label, llvm::ArrayRef<uint8_t> Data,
56                     uint64_t BaseAddr, uint32_t StartOffset);
57 
58   Line line() { return Line(*this); }
59   int getIndentLevel() const { return CurrentIndent; }
60 };
61 
62 struct AutoIndent {
63   explicit AutoIndent(LinePrinter &L, uint32_t Amount = 0)
64       : L(&L), Amount(Amount) {
65     L.Indent(Amount);
66   }
67   ~AutoIndent() {
68     if (L)
69       L->Unindent(Amount);
70   }
71 
72   LinePrinter *L = nullptr;
73   uint32_t Amount = 0;
74 };
75 
76 } // namespace lldb_private
77 
78 #endif
79